Fundus photography in red-free light (rhodopsin photography).
D003623:Dark Adaptation; D005654:Fundus Oculi; D006801:Humans; D008027:Light; D008722:Methods; D009755:Night Blindness / Q000503:physiopathology; D010781:Photography; D012160:Retina / Q000502:physiology; D012168:Retinal Pigments / Q000502:physiology
D012168:Retinal Pigments